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科学美国人60秒 SSS What's a Narwhal's Tusk For?
Although the tusk can be a weapon, the variation in tusk length among animals of similar body size points to it being primarily a mating status signal. Full Transcript Deep beneath the frozen surface of the Arctic swims a sea unicorn. In reality, its
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科学美国人60秒 SSS Waiter, What's This Worm Doing in My Sushi?
Well, its probably there because the odds on its presence have gone way up in the past 40 years. But such parasites are still much more of a health problem for whales and dolphins than they are for us. Full Transcript Im a big fan of sushi and cevich
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科学美国人60秒 SSS Red-Winged Blackbirds Understand Yellow Warbler Alarms
Researchers studying yellow warbler responses to the parasitic cowbird realized that red-winged blackbirds were eavesdropping on the calls and reacting to them, too. Full Transcript Brown-headed cowbirds are obligate brood parasites. That means they
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科学美国人60秒 SSS Obama Talks Some Science Policy
As he endorsed Joe Biden today, former president Barack Obama touched on some environmental, economic and science matters. Full Transcript Earlier today, April 14, former President Barack Obama posted a 12-minute address in which he endorsed Joe Bide
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科学美国人60秒 SSS Lung Cancer Screen Could Be Easy Pee-sy
In mice, a test for lung cancer involves nanoprobes that recognize tumors and send reporter molecules into the urine for simple analysis. Full Transcript Imagine getting screened for early-stage lung cancer simply by taking a deep breath from an inha
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科学美国人60秒 SSS How Herbivore Herds Might Help Permafrost
Introducing herds of large herbivores in the Arctic would disturb surface snow, allowing cold air to reach the ground and keep the permafrost frosty. Full Transcript The Arctics permafrost is meltingand fast. Thats bad news, because these frozen soil
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科学美国人60秒 SSS Our 3,000th Episode
Here are some highlights from the past 13.5 years of this podcast. Full Transcript In keeping with the net increase in entropy of the universe, this is the 3000th episode of 60-Second Science. So well take a break today from our usual coverage for so
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科学美国人60秒 SSS Jane Goodall: We Can Learn from This Pandemic
In a teleconference promoting her participation in Earth Day events on the National Geographic Channel, Goodall talked about what gives her hope during the pandemic and what she hopes we all learn from it. Full Transcript And with this coronavirus, t
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科学美国人60秒 SSS Birds on Rhinos' Back Help Them Avoid Poachers
Oxpeckers riding on rhinoceroses feast on ticks, and their calls warn the nearsighted herbivores about approaching humans. Full Transcript Black rhinos have terrible eyesight. Even so, these giant African herbivores easily fend off hungry lions and h
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科学美国人60秒 SSS Science News Briefs from around the World
Here are a few brief reports about science and technology from around the planet, including one about what the eruption of Mount Vesuvius might have done to one ill-fated resident of Herculaneum. Full Transcript Hi, Im assistant news editor Sarah Lew
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科学美国人60秒 SSS New Data on Killer House Cats
Wild cats kill more animals than domestic ones do. But pet cats kill many more of them in a small area than similarly sized wild predators. Full Transcript Domestic cats that live or go outside kill lots of wild animals. Recent studies find that outd
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科学美国人60秒 SSS 有魅力的年轻女性可能享有司法优势
This is Scientific American's 60-second Science, I'm Christopher Intagliata. 这里是科学美国人60秒科学系列，我是克里斯托弗因塔格里塔。 Eight years ago, the jury in the trial of Casey Anthony announced their verdict. As to th
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科学美国人60秒 SSS 研究僵尸蚂蚁的"死亡之握"
This is Scientific American's 60-second Science, I'm Christopher Intagliata. 这里是科学美国人60秒科学系列，我是克里斯托弗因塔格里塔。 It's straight out of a horror movie: an ant, infected with a fungus, starts behaving stra
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科学美国人60秒 SSS 一小勺月球土给人类带来的巨大影响
This is Scientific American's 60-second Science, I'm Christopher Intagliata. 这里是科学美国人60秒科学系列，我是克里斯托弗因塔格里塔。 The Apollo missions brought back 842 pounds of rock and soil from the moon... nearly 2200
